Home / 397,728.35-548,865.21-218,880.35

Finding the Fourth Proportional to 397,728.35, 548,865.21 and 218,880.35

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Solution

The fourth proportional to 397,728.35, 548,865.21 and 218,880.35 is: 302,054.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,728.35 : 548,865.21 = 218,880.35 : x
  2. Step 2: Convert to fraction form
    397,728.35/548,865.21 = 218,880.35/x
  3. Step 3: Cross multiply
    397,728.35x = 548,865.21 × 218,880.35
  4. Step 4: Simplify right side
    397,728.35x = 120,135,809,267.62
  5. Step 5: Solve for x
    x = 120,135,809,267.62/397,728.35
  6. Step 6: Final answer
    x = 302,054.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.